Locomotive turn-table



PATENTED FEB. 16, 1904.

R. FAIR & s. P. 33mm.- LOGOMOTIVE'TURN TABLE;

'ABPLIGATNN rump NOV. 6, 1903.

2 SHEETS-SHEET L H0 MODEL.

- Inventors Attox ney v PATENTED FEB. 16, 1904. R. FAIR & S. P.'DA.VIS.

LOGOMUTIVE TURN TABLE" AYPLIGATIQN FILED iTOV. 5, 1903.-

2 SHEETS-SHEET 2.

NO MODEL.

I I "III" |||||millmlIHIIIPIHIilmilllliilim v lllll mug v 7 l c Q llllmillllllllllllllllllll Witnesses UNITED STATES Patented February 16,1904.

PATENT OFFICE.

RICHARD FAIR, or MOOSUP, AND SAMUEL P. DAVIS, or DANIELSON',CONNECTICUT.

'LOCOMOTIVE TU/RN-TABLE;

SPECIFICATION forming part of Letters Patent No. 752,539, dated February16, 1904.

Application filed November 5, 1903 Serial No. 179,972. (No model.)

To all whom) it may concern: 2

Be it known that we,RIonARD FAIR, residing at Moosup, and SAMUEL P.DAVIS, residing at Danielson, in the county of Windham and State ofConnecticut, citizens of the United.

' the driving-shaft 8. The said frame is also States, have inventedcertain new and useful Improvements in Locomotive Turn-Tables; and we dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

Our invention is an improved turn-table for locomotives and cars usingsteam-power; and it consists in the construction and 00111". bination ofdevices hereinafter described and claimed.

The object of our invention is to provide an apparatus adapted foroperation by the steam-power of a locomotive for turning a turn-table,so that the turn-table may be operated directly from a locomotivethereon and without the employment of other power than that which thelocomotive furnishes.

In the accompanying drawings, Figure 1 is a perspective view of aturn-table embodying our improvements, the pit in which the turntable islocated being-shown insection. Fig, 2 is a sectional view of the same,taken on the plane disclosing the driving-shaft.

The turn-table 1 here shown may be of any suitable construction and islocated over a pit 2, the walls of which are shown at 3. The support 4may also be of any suitable construct-ion, but should be provided with acircular runway 5. Thepivot of the turn-table is shown at 6, and theusual frusto-conical rollers 7 therefor bear and operate on the circularrunway 5.

In the embodiment of our invention we provide the runway 5 withperipheral gearteeth 38, which may be of sections bolted or otherwisesecured to the periphery of the runway. We also provide avertically-disposed driving-shaft 8, which has a bearing, as at 9, inthe turn-table at a suitable distance from one side thereof, and alsohas a bearing, as at 10, in the brace 11, which is here shown asattached to the supporting-framework unwith a Weighted arm 36.

der the turn-table. The track-rails on the turntable are indicated at12.

At one side of the track is a supportingframe 13, which is upright, asshown, and which has a bearing 14 for the upper end of provided withbearings 15 for a Vertical counter-shaft 16 and with bearings 17 for avertical shaft 18. The shaft 16 has a spurgear 19 near its upper end anda similar but somewhat larger gear. 20 near its lower end.

On the shaft 18 is a loose spur-gear 21, which is vertically movablethereon, so that it may be disposed in position to engage or disengagethe gear 19, and may be locked in either of said positions by a pin 22inserted in an opening with which the shaft 18 is provided. I

The shaft 8 is provided at its lower end with a pinion 23, which engagesthe gear 8, which is relatively fixed. Said shaft is also provided at asuitable distance above the turntable with a friction-cone 24. Acylindrical sleeve 25 is loose on the shaft 8 above the friction-cone24, and on the lower portion of said sleeve 25 is a sleeve 26, which isvertically movable thereon, is splined thereto, as at 27, is providedwith a groove 28, formed between annular circumferential collars 29,and'at the lower end of the said sleeve is a conical or frusto conicalfriction cup 30, which when the sleeve 26 is lowered serves tofrictionally engage the friction-cone 24: to lock the sleeve 25 to theshaft 8, so that the latter will rotate with the former.

At the upper end of the sleeve 25 is a pcripherally-spurred gear 31,which meshes with the spur-gear 20 of the shaft 16 and is. provided onits upper side with an annular series of ratchet-teeth 32. A spur-gear33, which is adapted to be engaged by the gear 21 when the latter alsoengages the gear 19, is loose on the shaft, 8 and is provided with adepending sleeve 34:. Said sleeve 34: carries a plurality of pivoteddogs 35, each of which is provided Said weighted arms serve to normallykeep the pivoted dogs in engagement with the ratchet-gear 32 on the gear31, and when the said dogs are turned to a position to disengage theratchet-gear thesaid weighted arms also serve to maintain the said dogsin the said disengaged position. Hence the gear 31, and consequently thesleeves 26, may be locked to or released from the gear 33 at will.Normally the dogs 35 are engaged with the ratchet-gear 32, as shown inFig. 1, and the gear 21 is out of engagement with the gears 19 and 33. I

On rare occasions, when it becomes necessary or desirable to reverse themovement of the turn-table, the gear 21 will be shifted manually intoengagement with the gears 19 and 33, as shown in Fig. 2.

At the upper end of the driving-shaft 8 is a motor 37, which in practicemay be of any preferred type adaptedfor operation by steam from thelocomotive and adapted to utilize the steam-power of the locomotive torotate the gear 33, and hence cause the shaft 8 to revolve in onedirection, so that the gears 23 38 will cause the turn-table to rotate,the gear 23 moving orbitally around the gear 38, as will be understood.

In the embodiment of' our invention here shown the motor 37 is of therotary turbine type, in which the casing is secured to the frame 13 andis provided with a packing 39 for the shaft 8, and an impact-wheel orrevoluble element is loose on the said shaft and is fast to the gear 33,so as to rotate the latter. A flexible steam-pipe 40 supplies steam tothe motor 37 from the boiler of a locomotive to be turned by theturn-table, the said pipe 40 being adapted to be coupled to a steam-conenection of the boiler. The steam-exhaust pipe of the motor 37 isindicated at 41.

On the turn-table isa standard 42, to which is fulcrumed ashipping-lever 43, one arm of which is bifurcated to form a yoke 44,that engages the annular groove 28 of the frictionclutch element 26, sothat the shipping-lever is adapted for moving said friction-clutchelement to lock and release the shaft 8. A spring is employed to act onthe said shipping-lever in such manner as to normally cause it tofrictionally lock the friction-cup 30 to the friction-cone 24. Saidspring is here shown as a coiled extensile spring having its lower endconnected to the shipping-lever and its upper end adjustably connectedto the frame 13, so that its tension may be varied. The shippingleverhas an arm 46 and is also provided with a hand-lever arm 47. The arm 46is provided with a tappet-head 48 of suitable construction.

At one side of the turn-table the wall 3 of the pit is provided with alock-opening 49. The turn-table is provided with a hinged gravitylocking device 50, adapted to drop into the opening 49 to automaticallylock the turntable when the latter reaches the required position.

Pivotally mounted beyond the side of the and out of the path of thetappet-head 48 of the shipping-lever, the latter turning with theturn-table. Within the scope of our invention this operating-cam may beof any suitable construction and the same may be mounted in anysuitable, manner. It is here shown as adapted to lie in the path of thetappethead 48 when turned inwardly and to depress said tappet-head asthe latter passes under it, so as to turn the shipping-lever against thetension of the spring 45 when the lock 50 drops into the lock-opening49, so as to release the friction-clutch element 26 from thefriction-cone 24, and hence cut off the application of power to thedriving-shaft 8 when the turn-table is locked in the required position.To secure the operating-cam in position to thus engage the tappet-headof the shipping-lever, we provide a pin 52, which may be placed in orremoved from the opening 53 in the plate or other suitable device 54. Topermit the rengagement of the movable element of the friction-clutchwith the driving-shaft to enable the turn-table to be again started whenthe lock device 50 has been released from the opening 49, it isnecessary to withdraw the pin 52, thereby releasing the cam 51, and thenturn the latter outwardly to clear the tappet-head 48 of theshipping-lever. The clutch will then be automatically locked by theaction of the spring 45, as will be understood. By the provision of thelever-arm 47 the shipping-lever may be manually operated, if desired, orin the event that the automatically-operating cam 51 or tappethead 48should become broken or get damaged to such an extent as to beinoperative.

To lock the shipping-lever in the position assumed thereby when theclutch elements are disconnected from each other, we provide a detent55, which is pivotally mounted on an arm 56 with which the frame 13 isprovided and operates by gravity to engage its jaw 57 with a stop 58,with which the shipping-lever is provided.

To turn the turn-table in the reverse direction, the dogs 35 must bedisengaged from the ratchet-gear 32 and the gear 21 engaged with thegears 19 and 33, as shown in Fig. 2.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of this invention.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is-

1. In combination with a turn-table, a fixed gear, a power-shaft carriedby and revoluble slidably with the turn-table and having a pin- IIO ionengaging the fixed gear, a motor also carried by the turn-table, means,including a clutch device, connecting the motor' to the power-shaft, andmeans to automatically operate the clutch device, to disconnect the mo:tor from the power-shaft when the turn-table reaches the requiredposition.

2. In combination withaturn-table, a motor and gear, including a clutchdevice, to rotate the turn-table, means to automatically lock theturn-table in the required position and means to automatically operatethe clutch device to put the motor out of gear with theturntable-rotating gear when the turn-table reaches such position,substantially as described.

3. In combination with a turn-table, a fixed gear, a power-shaft carriedby and revoluble orbitally with the turn-table, and having a pinionengaging the fixed gear and motor, and means, includinga clutch device,to drive the said shaft by the power of said motor.

4:. In combination with a turn-table, a fixed gear, a power-shaftcarried by and revoluble orbitally .with the turn-table and having apinion engaging the fixed gear and motor, and means to automaticallyoperate said clutch device to disconnect the turn-table from the motorwhen the turn-table reaches the required position.

5. A turn-table having a motor, means operated therebyto rotate theturn-table, means I to put said turn-table-rotating means in andwhen theturn-table reaches the required position.

7. A turn-table havlng a motor, a driving- "sham-means operated by thedriving-shaft to rotate the turn-table, means to connect the motor tothe driving-shaft to rotate the latter in either direction, means todisconnect the motor from the driving-shaft, and automatically-operatingmeans to actuate said disconnecting means.

In testimony whereof we have hereunto set our hands in presence of twosubscribing witnesses.

RICHARD FAIR. SAMUEL P. DAVIS. Witnesses:

C. S. BURLINGAME, EDWARD DEXTER.

